Python实现的基于云平台的DDoS防护系统
这是一个基于阿里云平台的DDoS防护系统,使用Python语言实现。主要功能是监控流量,及时发现攻击行为,对攻击流量进行过滤,确保服务器正常运作。
具体实现流程如下:
1.获取服务器的公网IP。
import socket ip = socket.gethostbyname(socket.gethostname())
2.创建阿里云DDoS防护实例。
from alibabacloud_ddoscoo_ddoscoo_client import AlibabaCloudddoscooClient from alibabacloud_tea_openapi import models as open_api_models from alibabacloud_tea_console import models as console_models from alibabacloud_tea_util import tea_util config = tea_util.init_config("config.json") client = AlibabaCloudddoscooClient(config)
3.监控服务器流量。
from alibabacloud_ddoscoo_ddoscoo_client import AlibabaCloudddoscooClient from alibabacloud_ddoscoo_models import DescribePacketMonitorDataRequest from alibabacloud_ddoscoo_util import util start_time = util.get_millisecond(time.time() - 300) # 过去5分钟 end_time = util.get_millisecond(time.time()) request = DescribePacketMonitorDataRequest.DescribePacketMonitorDataRequest() request.instance_id = instance_id request.protocol = 'TCP' request.start_time = start_time request.end_time = end_time request.sport_start = 80 request.sport_end = 80 request.dport_start = 1024 request.dport_end = 65535 request.ip = ip request.interval = 60 response = client.describe_packet_monitor_data(request) if response.is_success(): data = response.body else: print(response.error_message)
- 发现攻击流量并进行过滤。
如果监控数据中发现攻击流量,则执行过滤命令:
# 过滤所有访问 www.pidancode.com 的数据包 os.system('tcpdump not dst host www.pidancode.com -w /tmp/tcpdump_output.pcap &')
- 记录日志。
with open('/tmp/tcpdump_output.log') as f: for line in f: if 'No suitable device found' in line or 'capturing on' in line: continue print(line.rstrip())
- 及时关闭过滤命令。
# 终止 tcpdump 命令 os.system('pkill -f tcpdump')
以上就是这个DDoS防护系统的实现流程和核心代码。当然,实现过程还有很多细节和优化可以做,比如可以使用多线程或异步IO加速流量监控、使用黑白名单机制加强攻击流量过滤等等。
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